The viscosity of the MW = 130,000 PVA and the MW = 22,000 PVA were measured.

MW = 130,000 PVA Solution Preparation

% wt/mL

Calculated g/mL

Mass Used

Total Volume

2% wt/mL

0.02 g/mL

0.406 g

20 mL

1% wt/mL

0.01 g/mL

0.204 g

20 mL

0.5% wt/mL

0.005 g/mL

0.101 g

20 mL

0.2% wt/mL

0.002 g/mL

0.041 g

20 mL

Approximately 10 mL of the first solution tested was poured into the viscometer.

The time it took for the sample to travel between the two lines marked on the viscometer were recorded.

The test was repeated 2 or 3 times for each sample

After the first solution was removed, 10 mL of the next solution was added to the viscometer to rinse out the previous solution.

Steps 1 - 4 were repeated for all of the remaining solutions.

Data

Viscosity Test Results (Part 1)

% wt/mL

Time 1

Time 2

Time 3

Average Time

2% wt/mL

9.35s

9.48 s

9.51

9.45 s

1% wt/mL

6.46 s

6.16 s

n/a

6.31 s

0.5% wt/mL

4.42 s

4.47 s

n/a

4.445 s

0.2% wt/mL

4.09 s

4.11 s

n/a

4.10 s

Notes

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